On Wed, 30 Jun 2010 19:20:59 -0500
Fernando Guzman Lugo x0095...@ti.com wrote:
due to a restriction in scatter gather lists, it can
not be created a list for a buffer bigger than 1MB.
This patch is spliting big mappings into 1MB mappings.
I don't read the whole thread but the above
On Wed, Aug 25, 2010 at 10:42 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
On Wed, Aug 25, 2010 at 7:00 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
Or the whole iovmm.c can be copied and just remove the mapping.
That is the migration patches do, remove custom bridge
...@nokia.com; felipe.contre...@nokia.com
Subject: Re: [PATCH 8/9] dspbridge: add map support for big buffers
On Wed, 30 Jun 2010 19:20:59 -0500
Fernando Guzman Lugo x0095...@ti.com wrote:
due to a restriction in scatter gather lists, it can
not be created a list for a buffer bigger than 1MB.
This patch
On Thu, 26 Aug 2010 07:38:26 -0500
Guzman Lugo, Fernando fernando.l...@ti.com wrote:
due to a restriction in scatter gather lists, it can
not be created a list for a buffer bigger than 1MB.
This patch is spliting big mappings into 1MB mappings.
I don't read the whole thread but the above
...@nokia.com;
felipe.contre...@nokia.com
Subject: Re: [PATCH 8/9] dspbridge: add map support for big buffers
On Wed, Aug 25, 2010 at 10:42 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
On Wed, Aug 25, 2010 at 7:00 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
Or the whole iovmm.c can
;
ameya.pala...@nokia.com; felipe.contre...@nokia.com
Subject: RE: [PATCH 8/9] dspbridge: add map support for big buffers
On Thu, 26 Aug 2010 07:38:26 -0500
Guzman Lugo, Fernando fernando.l...@ti.com wrote:
due to a restriction in scatter gather lists, it can
not be created a list for a buffer
On Thu, 26 Aug 2010 08:16:24 -0500
Guzman Lugo, Fernando fernando.l...@ti.com wrote:
From a quick look, arch/arm/plat-omap/iovmm.c does nothing wrong about
scatter gather chaining. arm/arm/mm/dma-mapping.c looks fine too about
it. Maybe just defining ARCH_HAS_SG_CHAIN works?
I can try, but
;
ameya.pala...@nokia.com; felipe.contre...@nokia.com
Subject: RE: [PATCH 8/9] dspbridge: add map support for big buffers
On Thu, 26 Aug 2010 08:16:24 -0500
Guzman Lugo, Fernando fernando.l...@ti.com wrote:
From a quick look, arch/arm/plat-omap/iovmm.c does nothing wrong about
scatter gather
...@nokia.com;
felipe.contre...@nokia.com
Subject: Re: [PATCH 8/9] dspbridge: add map support for big buffers
On Wed, Aug 25, 2010 at 12:55 AM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
However, from what I can see iovmm can be used instead of
dmm even if
the switch to iommu
On Wed, Aug 25, 2010 at 7:00 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
Or the whole iovmm.c can be copied and just remove the mapping.
That is the migration patches do, remove custom bridge mapping and
use iovmm module instead.
You didn't get me; copy the iovmm.c code into dmm.c,
...@nokia.com;
felipe.contre...@nokia.com
Subject: Re: [PATCH 8/9] dspbridge: add map support for big buffers
On Wed, Aug 25, 2010 at 7:00 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
Or the whole iovmm.c can be copied and just remove the mapping.
That is the migration patches do
On Fri, Jul 2, 2010 at 9:39 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
I think, it would be good if we get rid of DMMPOOL size, if the liked list
grow up as it is needed, there is no memory penalty of have all the possible
iommu addresses valid (1100 - ). The
...@nokia.com;
felipe.contre...@nokia.com
Subject: Re: [PATCH 8/9] dspbridge: add map support for big buffers
On Fri, Jul 2, 2010 at 9:39 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
I think, it would be good if we get rid of DMMPOOL size, if
the liked list grow up as it is needed
-ker...@vger.kernel.org; o...@wizery.com;
hiroshi.d...@nokia.com; ameya.pala...@nokia.com;
felipe.contre...@nokia.com
Subject: Re: [PATCH 8/9] dspbridge: add map support for big buffers
On Fri, Jul 2, 2010 at 9:39 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
I think, it would be good
...@nokia.com;
felipe.contre...@nokia.com
Subject: Re: [PATCH 8/9] dspbridge: add map support for big buffers
On Tue, Aug 24, 2010 at 7:31 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
-Original Message-
From: Felipe Contreras [mailto:felipe.contre...@gmail.com]
Sent
On Tue, Aug 24, 2010 at 9:44 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
However, I still have the question about the dependency on
iommu; AFAICS the DMM removal doesn't depend on the migration
to iommu, which AFAIK has been stalled for some time.
Yeah, DMM removal does not depend
...@nokia.com;
felipe.contre...@nokia.com
Subject: Re: [PATCH 8/9] dspbridge: add map support for big buffers
On Tue, Aug 24, 2010 at 9:44 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
However, I still have the question about the dependency on iommu;
AFAICS the DMM removal doesn't
On Tue, Aug 24, 2010 at 10:05 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
I've heard there are some problems regarding DMM, and since
you say you have already done the changes, and since iommu
migration is not yet ready AFAIK, it might make sense to go
for option b).
Anyway, thanks
...@nokia.com;
felipe.contre...@nokia.com
Subject: Re: [PATCH 8/9] dspbridge: add map support for big buffers
On Tue, Aug 24, 2010 at 10:05 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
I've heard there are some problems regarding DMM, and
since you say
you have already done
On Tue, Aug 24, 2010 at 10:30 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
Oh, I actually meant the DMM pool.
a) 1. Migrate to iommu, 2. Remove DMM completely
b) 1. Remove DMM pool, 2. Migrate to iommu 3. Remove DMM completely
Ok, what is the issue with DMM pool?
From what I've
...@nokia.com;
felipe.contre...@nokia.com
Subject: Re: [PATCH 8/9] dspbridge: add map support for big buffers
On Tue, Aug 24, 2010 at 10:30 PM, Guzman Lugo, Fernando
fernando.l...@ti.com wrote:
Oh, I actually meant the DMM pool.
a) 1. Migrate to iommu, 2. Remove DMM completely
b) 1
Lugo, Fernando
Subject: RE: [PATCH 8/9] dspbridge: add map support for big buffers
Fernando,
- for_each_sg(sgt-sgl, sg, sgt-nents, i)
- sg_set_page(sg, usr_pgs[i], PAGE_SIZE, 0);
+ da = iommu_vmap(mmu, da, sgt, IOVMF_ENDIAN_LITTLE
: [PATCH 8/9] dspbridge: add map support for big buffers
Hi Hari,
-Original Message-
From: Kanigeri, Hari
Sent: Thursday, July 01, 2010 6:36 PM
To: Guzman Lugo, Fernando; linux-omap@vger.kernel.org; linux-
ker...@vger.kernel.org
Cc: o...@wizery.com; hiroshi.d...@nokia.com
: [PATCH 8/9] dspbridge: add map support for big buffers
Fernando,
-Original Message-
From: Guzman Lugo, Fernando
Sent: Friday, July 02, 2010 11:27 AM
To: Kanigeri, Hari; linux-omap@vger.kernel.org; linux-
ker...@vger.kernel.org
Cc: o...@wizery.com; hiroshi.d...@nokia.com
Fernando,
- for_each_sg(sgt-sgl, sg, sgt-nents, i)
- sg_set_page(sg, usr_pgs[i], PAGE_SIZE, 0);
+ da = iommu_vmap(mmu, da, sgt, IOVMF_ENDIAN_LITTLE |
+ IOVMF_ELSZ_32);
-- iommu_vmap does the Kernel mapping to the
due to a restriction in scatter gather lists, it can
not be created a list for a buffer bigger than 1MB.
This patch is spliting big mappings into 1MB mappings.
Signed-off-by: Fernando Guzman Lugo x0095...@ti.com
---
arch/arm/plat-omap/include/dspbridge/dsp-mmu.h |2 +-
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